net/ieee802154/6lowpan/6lowpan_i.h

   1 #ifndef __IEEE802154_6LOWPAN_I_H__
   2 #define __IEEE802154_6LOWPAN_I_H__
   3
   4 #include <linux/list.h>
   5
   6 #include <net/ieee802154_netdev.h>
   7 #include <net/inet_frag.h>
   8 #include <net/6lowpan.h>
   9
  10 typedef unsigned __bitwise__ lowpan_rx_result;
  11 #define RX_CONTINUE             ((__force lowpan_rx_result) 0u)
  12 #define RX_DROP_UNUSABLE        ((__force lowpan_rx_result) 1u)
  13 #define RX_DROP                 ((__force lowpan_rx_result) 2u)
  14 #define RX_QUEUED               ((__force lowpan_rx_result) 3u)
  15
  16 #define LOWPAN_DISPATCH_FRAG1           0xc0
  17 #define LOWPAN_DISPATCH_FRAGN           0xe0
  18
  19 struct lowpan_create_arg {
  20         u16 tag;
  21         u16 d_size;
  22         const struct ieee802154_addr *src;
  23         const struct ieee802154_addr *dst;
  24 };
  25
  26 /* Equivalent of ipv4 struct ip
  27  */
  28 struct lowpan_frag_queue {
  29         struct inet_frag_queue  q;
  30
  31         u16                     tag;
  32         u16                     d_size;
  33         struct ieee802154_addr  saddr;
  34         struct ieee802154_addr  daddr;
  35 };
  36
  37 static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
  38 {
  39         switch (a->mode) {
  40         case IEEE802154_ADDR_LONG:
  41                 return (((__force u64)a->extended_addr) >> 32) ^
  42                         (((__force u64)a->extended_addr) & 0xffffffff);
  43         case IEEE802154_ADDR_SHORT:
  44                 return (__force u32)(a->short_addr);
  45         default:
  46                 return 0;
  47         }
  48 }
  49
  50 /* private device info */
  51 struct lowpan_dev_info {
  52         struct net_device       *wdev; /* wpan device ptr */
  53         u16                     fragment_tag;
  54 };
  55
  56 static inline struct
  57 lowpan_dev_info *lowpan_dev_info(const struct net_device *dev)
  58 {
  59         return (struct lowpan_dev_info *)lowpan_priv(dev)->priv;
  60 }
  61
  62 int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
  63 void lowpan_net_frag_exit(void);
  64 int lowpan_net_frag_init(void);
  65
  66 void lowpan_rx_init(void);
  67 void lowpan_rx_exit(void);
  68
  69 int lowpan_header_create(struct sk_buff *skb, struct net_device *dev,
  70                          unsigned short type, const void *_daddr,
  71                          const void *_saddr, unsigned int len);
  72 netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev);
  73
  74 int lowpan_iphc_decompress(struct sk_buff *skb);
  75 lowpan_rx_result lowpan_rx_h_ipv6(struct sk_buff *skb);
  76
  77 #endif /* __IEEE802154_6LOWPAN_I_H__ */